.rule-list {
  height: 300px;
  border: 1px solid #dddee1;
  border-radius: 5px;
  padding: 10px;
  overflow: auto;
}

.switch-box {
  position: relative;
}
.switch-box > div.mask {
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  bottom: 0;
  z-index: 1;
  cursor:pointer;
}